[krbdev.mit.edu #5697] make ccache handle referrals better

["Jeffrey Altman [Kermit Project]" via RT]

Sam Hartman via RT wrote:
>>>>>> "Jeffrey" == Jeffrey Altman via RT <rt-comment at krbdev.mit.edu> writes:
> 
>     Jeffrey> Tom Yu via RT wrote:
>     >> Ouch.  It looks like t_cc fails because it attempts to use some
>     >> human-readable strings instead of valid ASN.1 for the actual
>     >> encoded "ticket" when storing a credential.
> 
>     Jeffrey> Note that kx509 stores X.509 certificates in the cache
>     Jeffrey> using krb5_cc and there is at least one site that is
>     Jeffrey> using the ccache to store SSH private keys.
> 
> It's not clear we support any of these use cases.

That may be, but if you make this change you are going to break
code systems that people have been running in production for many
years.   If there is no reason to break other people's applications,
why do so?